<?php
$age = $_GET['age'];
if ($age >0 && $age <=2){
  echo "yinger  <br/>";
}
if ($age >2 && $age <=18){
  echo "qiongshaonian  <br/>";
}
if ($age >18 && $age <=30){
  echo "chengnina";
}
if ($age >30 && $age <=50){
  echo "zhongnian";
}
if ($age >50 && $age <=70){
  echo "laonian";
}
 ?>
